Hay I'm 15 and me and my boyfriend were fooling around and somehow we started dry humping and he told me that he had precum but his pants were'nt wet? And my period was sepouse to be at the end of the month but 3days passed and nothing happend and on the 4th day theire were some blood but i don't know if it's my period or if its implantation bleeding? So my question is can precum go through clothes and can I get pregnant? ? I did take 4 after morning pills and I've started taking birth control but it was ons the 4th day after it all happend?!*